Lock.



' No. 742,052. -PAT'BNTED 00T. 20,1903.,

s: NELSON @n E. Woon l APPLIOATION I"ILBD MAR. Z6. 1903. N0 MODEL. 2SlIBETS-SHEEII.

PATENTED 00T. 2o, 190s; s. NELSON al E. Woon. l

LOCK.

APPLIOATION FILED MAR. 2e. 190s.

Z S'HEETS-SHEET 2.

N0 MODEL.

UNITED STATES a/sented October 20, 1908.

PATENT OFFICE.

SCOTT NELSON, OF BROOKSTON, AND ELIJAH WOOD, OF REYNOLDS,

INDIANA. v

" LocK.

sPEc'IEcATIoN forming part of Letters Patent No. 742,052, dated october2o, 1903. Application filed March 26, 1903. Serial No. 149.684.(Nomodel.)

To all whom it may concern:

Be it known that we, SCOTT NELSON, resid- Aing at Brookston, and ELIJAHWOOD, residing at Reynolds, in the county of White, State .of Indiana,citizens of the United States, have invented certain new and usefulImprovements in Locks, of which the following is a specification.

This invention relates to locks, and has for its object to provide Vanimproved form of i mortise-lock wherein the application of the its innerand outerlimit-s.

With these and other objects in View the present invention consists inthe combination and arrangement of parts, as will be hereinafter morefully described, shown in the accom panying drawings, and particularlypointed out in the appended claims.

In the drawings, Figure 1 is a vertical sectional view taken through aportion of a door with the lock of the present invention fitted theretoand having parts broken away to show the movable elements thereof. Fig.2 is a transverse sectional view on the line 2 2 of Fig. 1. Fig. 3 is anenlarged detail sectional view taken through'the tumbler of thespringactuated latch. Fig. 4 is a similar view taken through thekey-actuated bolt. top plan view of the spring-actuated latch. Fig. 6 isa rear elevation of the latch. Fig. 7 is an enlarged detail sectionalview taken on the line 7 7 of Fig. 5. Fig. 8 is a bottom plan view ofthe key-actuated bolt. Fig. 9 is a detail perspective view of said bolt.

Like characters of reference designate corresponding parts in each andevery figure of the drawings.

Fig. 5 is a By reference more particularly to Figs. 1

present device embodies a face-plate 1, from whichprojectapairofupperspaced arms2and an integral housing or casing 3,which are secured to the back of the face-plate in any suitablemanner-z-as, forinstance, by having their forward ends bent intooutturned flanges riveted to the face-plate. upper pair of arms 2 andsubstantially midway between the opposite ends of said arms is a plate4, preferably in the form of a disk, having notches 5 in its oppositeedges for the reception of the reduced portions of the arms, as shown inFig. 7. It will here4 be noted that the notches in the plate 4 aresubstantially T-shaped, and the ange portions of the notches arehammered or upset, so as tov overlap the arms 2, and thereby connect theplate rigidly thereto. A lsuitable open- -ing 6 is formed centrallythrough the plate 4 for the slidable reception of the stem portion 7 ofa latch-bolt, the beveled head 8 of which works through an opening inthe face-plate. Surrounding the bolt 7 is a helical spring 9, whichbears in opposite directions against the plate 4 and the head of thebolt, so as to-yieldably hold the latter at its outer limit. Formanipulating the latch there is provided a cylindrical tumbler 10, theopposite journal or hub portions 11 of which are rotatably mounted incorresponding circular openings 12 in the enlarged rear end portions ofthe arms 2. lAt the normally front side of the tumbler is a perforateprojection 13', with which is loosely engaged the hooked end 14 of alink 15. The forward end of the link 15 slides in a longitudinal slot 16in therear end of the bolt 7, and said forward end is bent to form anelongated loop or slotted portion 17 for the reception of a pin orkey18, which pierces the rear slotted en'd of the bolt. By this connectionbetween the link and the bolt it will be seen that a rearward movementof the link 15 will draw the bolt rear- Located between vthel wardly,and by reason of the slot 16 the bolt IOO As best indicated in Fig. 6 ofthe drawings, it will be seen that the rear end portions of the arms 2are providedwith lateral inwardly-directed projections 2l, which extendacross the periphery of the tumbler lO at diametrically opposite pointsand in the path of the perforate ear or projection 13, thereby to formstops to limit the rotation of the tumbler, and thereby preventcontinuous rotation of the door-knob spindle and in turn prevent adouble throwing of the latch.

The key-actuated bolt 22 is mounted in the integral housing or casing 3and has a laterallyenlarged head 23 at its outer end working through asuitable opening in the face-plate. The under edge of this bolt isprovided with a front notch or seat 2-1 and a rear notch or seat 25,adapted to alternately receive the pin 26, carried transversely betweenthe sides of the integral housing or casing 3 and de signed to lock thebolt against accidental or unauthorized endwise movements! The top edgeof the bolt 22 is cut away or recessed, as indicated at 27, and acrossthis recess eX- tends a longitudinal leaf-spring 28, the opposite endsof which are bifurcated, as at 29, so as to straddle the bolt, thelatter being provided with front and rear shoulders 30 and 3l forengagement by the ends of the spring to prevent the latter fromworkingin an endwise direction upon the bolt. Bearing upon anintermediate portion and across 'the top of the spring is a pin 32,which pierces the opposite sides of the integral housing or casing 3 andtends to place a tension upon the spring, so as to normally hold thebolt in a depressed position. At the rear end of the bolt is an upperrearwardly-directed eXtension 33, the under side of which is providedwith adjacent substantially semicircular notches or seats 34 and 35, ofwhich the front notch 34 is in alinement with the keyholeslot 36 of eachside of the integral housing or casing 3, so as to receive the barrel ofthe key when the latter is inserted into the lock. When a key isinserted into the lock with its barrel received in the seat 34 of thebolt and then turned so as to swing its bit upwardly into the seat 35and then forwardly, the rear end of the bolt will be tilted upwardlyagainst the act-ion of the spring 2S, so as to lift the bolt out ofengagement with the pin 26 and then shoot the bolt forwardly until thebit of the key is turned downwardly, when the spring will force the boltdownwardly until the rear notch or seat 25 engages the pin 26 and locksthe bolt at its forward limit.

As best indicated in Fig. 8, it will be seen that the shank portion ofthe key-actuated bolt 22 is narrower than the space between the sides ofthe integral housing or casing 3, and to prevent lateral play of ythebolt projections 40 are provided on opposite sides of the bolt near therear end thereof, so as to work against the sides of the integralhousing or casing 3, and thereby obviate lateral play of the bolt. Toprevent the bit of a key from turning in the space between the bolt andthe integral housing or casing 3, the sides of which form guide-arms,projections 4l are provided upon the inner faces of the respectiveguide-arms of said integral housing or casing 3, so as to form stops tolimit the rotation of the bit of a key, and thereby guide or direct thelatter to the seat 34 of the bolt.

In View of the fact that there are no side plates extending from top tobottom of the face-plate l the application of the lock is very quicklyaccomplished by boring upper and lower openings 37 and 38 in the frontedge of the door 39 for the reception of the respective bolts, theface-plate l of course being let into the free edge of the door and theusual openings being provided in the door for the reception of thedoor-knob spindle and the key.

Having thus described the invention, what i is claimed, and desired tobe secured by Letters Patent, is-

1. In a lock, the combination with a faceplate, having guide membersprojected therefrom, of a bolt working between the members and throughthe face-plate, a tumbler mounted upon the members, a link pivoted atopposite ends to the tumbler and the bolt, and a stop projection carriedby one of the members and lying in the path of the rear end of the linkto limit the rotation of the tumbler.

2. In a lock, the combination with a faceplate, having guide membersprojected therefrom, of a bolt working between the members and throughthe face-plate, a tumbler rotatably mounted upon the guide members, alink pivotally connected at opposite ends to the tumbler and the bolt,and diametrically opposite stop projections carried by the guide membersand directed across the periphery of the tumbler and in the path 0f thelink to limit the rotation of the tumbler in opposite directions.

3. In a lock, the combination with a faceplate having guide membersprojected therefrom, of a guide-plate carried intermediately by themembers and provided with a perforation, a bolt disposed between theguide members with its headed end working through the face-plate and itsopposite longitudinally slotted end working through the perforation inthe guide-plate, a helical spring embracing the bolt and bearing inopposite directions against the head thereof and the guideplate, atumbler rotatably mounted upon the guide members in rear of the bolt,alink pivotally connected to the tumbler with its forwardlongitudinally-slotted end working in the slot ot' the bolt, a pincarried by the bolt and piercing the slotted portions of said bolt andthe link, and opposite stop projections carried by the guide members andprojected across the periphery of the tumbler and in the path of thelink to limit the rotation of the tumbler.

4. In a lock, the combination with a faceplate, having opposite guidemembers projected therefrom and provided with correspond-I ICO` IIO

ing keyhole-slots, of a bolt having its enlarged head working throughthe face-plate and its reducedportion working between the guide members,the under side of the shank being provided with front and rearlocking-notches and also provided' with adjacent key-receiving seats atits rear end, the top portion of the shank being longitudinallyrecessed, a pin extending between the j guide members and disposed to bealternately received in the locking-notches of the bolt, a leaf-springspanning the upper recessed portion ofthe bolt and having its oppositeends bifurcated to straddle the bolt at the opposite ends of the`recessed portion thereof, apin extending between the guide members andbearing upon the top of the spring to yieldably hold the bolt inengagement with the locking-pin, and guide projections carried byopposite sides of the bolt and working against the guide members, thebolt having a tilting movement u-nder tne action of a key to permitdisengagement of the locking-notches from the lockingpin.

5. In a lock, the combination with a casing, of a slidable bolt having alongitudinal recess in one edge thereof, a leaf-spring carried by thebolt and straddling the recessed portion thereof and secured at itsextremities to the bolt, and a projection carried by the casing andfrictionally bearing against the spring, whereby the bolt is capable ofyielding laterally.

6. In a lock the combination with a casing, of a slidable bolt having alongitudinal recess in one edge thereof, a leaf-spring spanning saidrecessed portion of the bolt, and having its opposite ends bifurcated tostraddle the bolt at the opposite ends of the recessed portion thereof,and a projection carried bythe casing and frictionally-bearing againstthe spring whereby the bolt is capable of yielding laterally.

7. In a lock, the combination with a faceplate, an integral housing orcasing projecting therefrom, a slidable bolt moving in said housing orcasing and depressed` at its top portion, a spring fixed at each end tothe upper edge of the bolt directly over the depressed portion thereof,adjacent key-receiving seats formed in the under rear extremity of thebolt, the front receiving-seat being normally in alinement with thekeyhole, front locking-notches also formed in the under edge of saidbolt, and a piu extending between theside walls of said housing orcasing to normally engage one of said front lockingnotches.

In testimony whereof we afx our signatures in presence of two witnesses.

sco'rT NELsoN. ELIJAH woon.

Witnesses:

WESLEY TAYLOR, FRANK GRAHAM.

